Some questions about gameplay systems/features

[bisthebis]

About culture : (Cf EBD)
-Hellenistic kingdoms (not KH, but Epeiros, Macedonia, Selucids, Pergamon, Ptolemaoi, Baktria and I think Bosphore. Ponyos can build them but with some limitations and is not of greek cullture) can build hellenistic colonies provided they have a metropolis (At the start, there's 4 metropoleis : Athenai, Corinthos, Alexandira and Pergamon : Far from bactria !)
These colonies increse greek culture by 1% every 2 turns (The bonus is only shown in building description one turn but not next etc)
First level colony caps greek culture at 30%n 2nd level at 50%, 3rd at 70%.
-Many factions can build eastern colony that work the same way but increase Eastern imperial culture instead. For Baktria, it allow to get native administration, a government that allows more civic buiildings than allied governments but less than hellenic administration. These colonies don't need to have colonists.
-IIRC, Bosphoran governments increase greek culture too (1% for 2 turns)